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Case study
Plant monitoring and control system for Japan’s largest combustible waste incineration facility
Shin-Koto Incineration Plant, Clean Authority of Tokyo
Contributing to the protection of the global environment by enabling stable operation of the facilities
Overview
The Shin-Koto Incineration Plant is Japan’s largest combustible waste incineration facility and is located at Yumenoshima in Koto-ku along the route that runs from Tokyo to a theme park in Urayasu City. This major plant boasts the nation’s largest incineration capacity of 1,800 tons per day, which is equivalent to the waste generated by about 2.2 million residents, incinerates some 400,000 tons of combustible waste annually, and is one of the 21 incineration plants under the control of the Clean Authority of Tokyo.
The plant has facilities that utilize incineration heat to generate a maximum of 50,000 kW, which is equivalent to the amount of electricity used by about 130,000 households, and this generated electricity is put to use at the plant and sold to the electric utility.
When the plant was built in 1998, Fuji Electric delivered a plant monitoring and control system (called a control system hereafter), which has continued to contribute to the stable operation of the plant since then.
Client issue : Maintaining stable incineration of waste without requiring the facilities to be shut down
Fuji Electric’s MICREX-AX plant monitoring and control system in operation
(central control room)
(central control room)
All of the information is centrally monitored and controlled in a central control room at the plant using redundant network systems, and mechanisms were built so that the plant’s overall systems do not require shutting down.
The critical requirement of an incineration plant is to stably continue incinerating waste without requiring the facilities to be shut down. The control system in the central control room of the plant collectively monitors and controls all of the information. We have built mechanisms to improve reliability that utilize redundancy for the facilities and network systems that comprise the control system so that, in the unlikely event that one system fails, the other system operates and does not require the plant’s overall systems to be shut down.
Construction of systems that provide services 24/7/365
Fuji Electric’s service department has prepared maintenance plans for a wide variety of about 800 Fuji Electric devices, and the plans take into account the conditions of each device. Utilizing these plans, we have built systems that enable us to provide on-site maintenance and inspection services 24 hours a day, 365 days a year. Our staff are promptly dispatched to the client even late at night to service failures occurring in the control systems and other facilities.
Contributing to the protection of the global environment
Collectively monitoring and controlling all of the information to maintain the temperature in the incinerator at a high level of 800°C or above makes it possible to suppress the generation of dioxins that adversely affect human health, and the improved combustion efficiency enables increased power generation. And the reduction in greenhouse gas emissions also helps to prevent global warming.
Client comments
Fuji Electric’s control systems are installed in about 60% of the incineration plants under the control of the Clean Authority of Tokyo. Fuji Electric’s products and prompt service provided at any time of day or night have supported us from the time before our old plant was rebuilt. (Shin-Koto Incineration Plant Manager)
Client information
Client name: Shin-Koto Incineration Plant, Clean Authority of Tokyo
Location: 3-1-1, Yumenoshima, Koto-ku, Tokyo